Telegraphic transmitting device.



No. 831,355. PATENTED saw. 18, 1906.

I. KITSBE. TBLEGRAPHIG TRANSMITTING DEVICE.

APPLICATION FILED JUNE 21, 1906.1

w i/IM/eoow I I I I a d wank? I .ISIDOR KITSEE, OF PHILADELPHIA, PENNSYLVANIA.

TELEGRAPHIC TRANSMITTING DEVICE;

No. 831,355. Specification of Letters Patent. Patented Sept. 18, 1906.

Application filed June 21,1906. Serial No. 322,725.

To all whom it 777/0117] concern: Be it known that I, Isrnon KITssE, a citizen of the United States, residing at l?hiladelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Telegra hie Transmitting Devices, of which thexfol owing is a specification. 7 My invention relates to an improvement telegraphic transmitting devices. Its object is to produce a device efficient to transmit reversals over a line of transmission. To-day' it is a well-established fact that over lines with great capacity, such as subterranean or submarine cables, telegraphing In such with true reversals is desirable.

- transmission the use of a single Morse key with a single-contact is preferred before the complicated double-key arrangement of sub marine cables, and I have illustrated in the accompanying drawing the preferred arrange mentof accomplishing this object.

In the drawing, which in diagrammatic, view illustrates my invention, 1 1 are the line-wires, 2 3 are two sources of current, here shown as batteries, the source 2 comprising here four cells and the source 30am-- prising two cells, both of these sources connected in opposition as'to each. other. 6 is a condenser, here inserted between the two sources 5 is an inductive resistance shunted by the condenser 4. 7 is the lever of a common Morse key, and 8 the stationary point of same. Normally-that is, when the ,lineis idlethe key is open, and as the force of the battery 2 is greater than the force of the'battery 3 an impulse ,will flow over the line in the direction of the unfeathered arrow; but

when the key is depressed, thereby shunting .the battery- 2, the force of the battery 3 is' unopposed, and an impulse 'will flow over .the line in the direction of the feathered arrow. The operator in sending impulses over the -.li-ne manipulates his key in the usual manner; It is obvious that at the receiving-station a polarized receiver has to be used. I have not illustrated this device, as my invention only pertains to the transmitting of true reversals. rangement as illustrate the great disadvantage arose that on lilies of great length a large number of batteries has to used, and in the act of closing the key one 0? these sets of batteries has to be short-circuited, and in practice the deterioration of the battery was considered...

" tnipulated the kc In the mani ulation {if the ar- In my v inductive resistance, such as an electromagnot placed in series with the line and in the region of the shunt does not in the-least de-- crease the value of the reversals through the manipulation- (if-the key. In fact, this value is to a slightextent increased. I have maof a device such as described on a line aving about ten thousand ohms resistance, and I placed in the region of the shunt an electromagnet of five thousand ohms and forty-iour henries, and the measurement showed me an increase of the .available energy over an arrangement wherein the inductive'resistance was replaced by a noninductive resistance I made different tests over different lines, changing the value of the resistance from five ohms u to one hundred thousand, and every inductive resistance. The only drawback was that when the key was 0 en and an imterminal the inductive resistance, if of high value, retarded the flow of this impulse, and I therefore have recourse to static means, such as a condenser, shunting -0r.-overbrid ging the coil proper. With-th1s arrangement telegraphing with true reversals with the aid of a common Morse key can easily be accomplished, no matter how large the number of cells which have to be shunted with the aid of this key.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is'

1. In telegraphy, a transmittingdevice embracing two sources of current of unequal force connected in 0 position as to-the line, a transmitting-key a apted to shunt one of said sources and an inductive resistance in the region of said-shunt.

2. A telegraphic transmittin device comprisin twounequal sources 0 current connecte in series as to the line and in opposition as to each other, a transmitting-key adapted to shunt one-of said sources and a resistance 3. In telegraphy, means to transmit true reversals, said means embraclngtwo sources other, a transmitting-key adapted -to shunt ne of said sources andimductive resistance adapted to lessen the short-circuiting ofsaid source.

experiments I have found that an I one of t ese tests proved the efficiency of the pulse traveled over. the line rom the other rob and static means in the region ofsa'id shunt. I

of current of unequal force and connected in series to the hue and in opposition astc each sals, said means embracing two sources of current of unequal force and in opposition as to each other, out in series to the line and means to shunt one of said sources and also embracing means in the region of said shunt to prevent un'tiue deterioration of said source and static means overbridging said first means.

5. In combination with a line of transmission two sources of current connected in series as to the line and in opposition as to each other, shunt for one of said sources, an electromagnet in the region of said shunt, and means to open and close the shunt around one of said sources and saidelectromagnet.

6. In telegraphy, means to transmit true reversals, said means embracing two sources of current of unequal force connected in oposition as to each other and inserted in the ine of transmission, a sending key and means to shunt therewith one of said sources. in combination with an inductive resistance in the region of said source and a condenser shunting said inductive resistance.

In testimony whereof I affix my signature in presence of two Witnesses.

ISIDOR KITSEE.

Witnesses EDITH R.STILLEY, I\IARY 0. SMITH. 

